Sodium pertechnetate

Sodium pertechnetate
Names
	IUPAC name Sodium technetate(VII)
	Other names sodium tetraoxotechnetate (VII)
Identifiers
CAS Number	13718-28-0 ;
3D model (JSmol)	Interactive image; 99; Tc: Interactive image;
ChemSpider	64887107;
ECHA InfoCard	100.033.870
EC Number	237-273-2;
PubChem CID	74086836; 99; Tc: 23689036;
UNII	A0730CX801;
CompTox Dashboard (EPA)	DTXSID30894191 ;
	InChI InChI=1S/Na.4O.Tc/q+1;;;;-1; Key: MKADDTFVKFMZGF-UHFFFAOYSA-N;
	SMILES [Na+].[O-][Tc](=O)(=O)=O; 99; Tc: [O-][99Tc](=O)(=O)=O.[Na+];
Properties
Chemical formula	NaTcO4
Molar mass	169.89 g/mol
Appearance	White or pale pink solid
Melting point	< 1,063 K (790 °C; 1,454 °F)
Solubility in water	Soluble
Structure
Crystal structure	Scheelite
Space group	I41/a
Lattice constant	a = 5.3325(1) Å, c = 11.8503(3) Å
Formula units (Z)	4
Related compounds
Other anions	Sodium permanganate; sodium perrhenate
Other cations	Ammonium pertechnetate
Related compounds	Technetium heptoxide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Sodium pertechnetate is the inorganic compound with the formula NaTcO₄. This colourless salt contains the pertechnetate anion, TcO⁻
₄ that has slightly distorted tetrahedron symmetry both at 296 K and at 100 K while the coordination polyhedron of the sodium cation is different from typical for scheelite structure. The radioactive ^99m
TcO⁻
₄ anion is an important radiopharmaceutical for diagnostic use. The advantages to ^99m
Tc include its short half-life of 6 hours and the low radiation exposure to the patient, which allow a patient to be injected with activities of more than 30 millicuries. Na[^99m
TcO
₄] is a precursor to a variety of derivatives that are used to image different parts of the body.